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  ######################################
  
  ###############################################################
  ## Version control history
  ###############################################################
  ## $Id$
  ## $Log$
  ## Revision 1.5  2001/06/06 07:54:38  gawthrop
  ## Further fixes to make nonlinear PPP work ...
  ##
  ## Revision 1.4  2001/05/26 15:46:38  gawthrop
  ## Updated to account for new nonlinear ppp
  ##
  ## Revision 1.3  2001/04/05 11:50:12  gawthrop
  ## Tidied up documentation + verbose mode
  ##
  ## Revision 1.2  2001/04/04 08:36:25  gawthrop
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      error(mess);
    endif
    
    ## Use the last part of the simulation to compare with data
    y = y(1+N_data-n_data:N_data,:);
    y_par = y_par(1+N_data-n_data:N_data,:);

    if extras.verbose		# Diagnostics
      printf("y and y_0\n");
      [y,y_0]
    endif
    
    ##Evaluate error, cost derivative J and cost second derivative JJ
    error = 0; 
    J = zeros(n_th,1);
    JJ = zeros(n_th,n_th);
    
    for i = 1:n_y
      E = y(:,i) - y_0(:,i);	#  Error in ith output

MTT: Model Transformation Tools
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